Pneumatic device for raising or lowering car-windows



{N M a 1.)

8 H. HOLBROO-K & T. s. BEALS, Jr. PNEUMATIC DEVICE FOR RAISING 0R LOWERING GAR WINDOWS- No. 546,854.

Patented Sept. 24, 1895.

IN VE N 70/?5 ATTORNEYS.

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y. 1 ZZM ANDREW E GRA'MAM PHOTDLH'HO WASNINGTOMDC UNITED Tiaras PATENT union.

HORACE HOLBROOKAND THOMAS S. BEALS, JR, OF COUPEVILLE,

' WASHINGTON.

PNEUMATIC DEVICE FoR R AISiNG ORLOWERING CAR-WINDOWS.

SPECIFICATION forming part of Letters Patent No. 546,854, dated September 24, 1895. Application filed $eptember28, 1896 Serial No. 486,683- (No model.)

To aZZ whom it may concern-.-

Be it known that we, HORACE HOLBROOK and THOMAS S. BEALS, J r., of Coupeville, in the county of Island and State of Washington, have invented a new and Improved Pneumatic Device for Raising or Lowering Car- WVindows, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved device for conveniently raising and lowering the windows of railwaycars by the pressure of air supplied from the air-brake system.

The invention consists of certain parts and details and combinations of the same, as will be hereinafter described,-and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure l is a side elevation of theimprovement as applied and with parts in section. Fig. 2 is an enlarged sectional plan view of the same on the line2 2 of Fig. 1. Fig. 3 is a side elevation of a modified form of the improvement with parts in section. Fig. 4 is an enlarged sectional side elevation of the air-controlling valve, and Fig. 5 is a similar View of the same in a different position.

As illustrated in Figs. 1 and 2, the windowsash A to be raised or lowered is fitted to slide in a metallic tubular frame'B, which forms the window-casing and is fastened in the side of the car. The window-sash A is connected near the upper ends of the side styles with piston-rods O and G, carrying pistons D and D, respectively, fitted to slide in cylinders B and B respectively, formed in the lower part of the frame B, as plainly shown in the drawings. Now when air is admitted into the cylinders B and B at their lower ends the pistons D and D are forced upward, and by their piston-rods C and O raise the windowsash A. WVhen air is forced into the upper ends of the cylinders B and B then the pis: tons D and D are forced downward, so as to carry the sash A in a like direction to close the window.

The lower ends of the cylinders B and B are connected by a pipe E with an air-controlling valve F, (shown in detail in Figs. d and 5,) the said valve being connected by a pipe G with an air-supply, preferably the main air-reservoir on the engine, so that compressed air is passed to the said valve F. The latter is connected by a pipe H with branch pipes 11' and H leading to the upper ends of the cylinders B and B The valve F is provided with a valve-casing F, in which is mounted to turn the valve-plug F provided with a straight port F and a curved port F, of which the former is adapted to connect the inlet-pipe G with the pipe E to cause the compressed air to pass into the lower ends of the cylinders B and B for raising the windowsash, as above described. The other port F is adapted to connect the inlet supply-pipe G with the pipe H, so that compressed air can pass into the pipe H and branch pipes H and H to the upper ends of the cylinders B and B to force the pistons therein downward to close the window-sash.

When the valve-plug F isin the position shown in Fig. 4, then air is admitted to the upper ends of the cylinders, and when the plug is shifted to the position shown in Fig. 5, then air passes into the lower ends of the said cylinders 13' and B In order to exhaust the air from the cylinders B and B we provide the valve-plug F with peripheral recesses F and F", of which the recess F is adapted to connect the pipe E with a transverse recess F formed in the valve-casing F and leading to the outside. The other recess F is adapted to connect the pipe II with a transverse recess F likewise formed in the valve-casing F and leading to the outer air.

Now, when the port F connects the pipe G with the pipe H, (see Fig. 4,) then the recess F connects the pipe E with the recess F to permit the air in the lower ends of the cylinders B and B to pass out into the open air at the time the pistons D and D move downward. When the valve-plug F is shifted 'to the position shown in Fig. 5, then the pipe H is connected by the recess F with the recess F and air from the upper ends of the cylinders B and B can leak out to permit the pistons D and D to slide upward in the cylinders. The Valve-plug F is provided on its outer end with a handle I, arranged within convenient reach of the operator seated on the seat next the car-window, the said handle being pressed on opposite sides by springs J and J, held in a casing K attached to the side of the car. The springs J and J hold the handle I normally in such a position that neither port F nor port F makes connections with its respective pipes E G or H G. Now, when the operator pulls the handle I to the left against the tension of the spring J, then the valve-plug F moves into the position shown in Fig. 5,so that compressed air passes through the valve F into the lower end of the cylinders 13 and B to force the piston D and I) upward to raise the window-sash. Air in the upper ends of the cylinders will now escape through the pipes H H II and registering-recesses F F to the outer air. When it is desired to close the window, the operator pulls the handle I to the right, so that the plug F is moved into the position shown in Fig. l, whereby air is admitted to the upper ends of the cylinders B and B to force the pistons D and D downward to close the sash, the air in the lower ends of the cylinders escaping through the pipe E and registering-recesses F and F As soon as the operator releases the pressure on the handle I, the latter is forced back to its normal vertical position by the action of the respective spring J or J.

As illustrated in. Fig. 3, the improvement is applied to the ordinary window as now constructed, the sash A being fitted to slide in the usual window-frame A The sash A is in this case connected at its lower end, at the sides thereof, with piston-rods O 0 carrying pistons D D, respectively, fitted to slide in cylinders B 3 respectively, connected at their lower ends by a pipe E with the valve F and connected at their upper ends by the pipe 1-1 withthe said valve. The supply-pipe G and valve F, as well as the pipes E 11 are exactly like the pipes and valves before mentioned. The operation in this case is exactly the same as above de scribed, the operator simply shifting the handle I to the left or to the right to open or close the sash A.

Having thus described our invention, we claim as new and desire to secure by Letters Patent 1. A pneumatic device for raising andlowering car windows, comprising a cylinder, a piston fitted to slide in the cylinder and having its piston rod connected with the window sash, pipes connecting with the upper and lower ends of the said cylinder on opposite sides of the piston, and a valve for controlling the admission of air to either of the said pipes, substantially as described.

2. In a pneumatic device for raising and lowering car windows, the combination with a sash, of cylinders, pistons sliding in the cylinders and connected with the sash, an air supply pipe, pipes connecting the upper and lower ends of the cylinders with the supply pipe, and a valve for controlling the admission of air from the supply pipe to either of the pipes which connect with the cylinders, whereby air can be admitted to either the up per or lower ends of the cylinders, substantially as described.

3. In a pneumatic device for raising and lowering car windows, the combination with a sash, of cylinders, pistons sliding in the cylinders and connected with the sash, an air supply pipe, pipes connecting the upper and lower ends of the cylinders with the air supply pipe, and a valve for controlling the ad mission of air from the supply pipe to either of the pipes which connect with the cylinders, said valve being constructed to permit the air from the cylinders and pipes to escape to the outer air, substantially as described.

4:. A pneumatic device for raising or lowering car windows, comprising cylinders, pistons fitted to slide in the said cylinders and having their piston rods connected with the window sash, pipes connecting with the up per and lower ends of the said cylinders, 21. valve for controlling the admission of air to the said pipes, ahandle held on the valve plug of the said valve alternately to connect: the said pipes leading to the upper and lower ends of the cylinder with an air supply pipe, and springs pressing on thesaid handle at opposite sides thereof to hold the latter in a neutral position, substantially as shown and described.

5. Inapneumatic device forraisingand lowering car windows, a tubular window frame having cylinders formed in the lower portion, in combination with a sash sliding in the frame, pistons sliding in the cylinders, and having their piston rods connected with the upper part of the sash, and a valve for controlling the admission of air to the cylinders, substantially as herein shown and described.

HORACE IZIOLBROOK. THOMAS DEALS, J's. Vituesses:

W. E. CARLE'ION, S. R. SMITH. 

